Iran submitted a letter of protest to the United Nations Security Council on Thursday, charging Israel of attacking its nuclear scientists and coloring recent accusations of Tehran's links to attempted attacks against Israeli officials worldwide as being part of a "war game" against the Islamic Republic.

The scene of Monday’s attack against an employee of the Israel Embassy in New Delhi. Eyewitnesses reported seeing a motorcyclist attaching a device to the car.AP

Iran has long been claiming that Israel and the U.S. were behind a string of assassinations and bombing attacks against nuclear scientists and military officials in what Tehran sees as an Israeli attempt to hinder its nuclear ambitions.

These accusations resurfaced following the most recent alleged attack, as Iranian media reported last month that nuclear scientist Mostafa Ahmadi-Roshan was killed by a bomb placed on his car by a motorcyclist in Tehran.

In a letter submitted by Iran's Ambassador to the UN Mohammad Khazaei on Thursday, and cited by state-run Iranian television Press TV, the Islamic Republic charged the international community with no stopping Israeli attacks.

"Regrettably, the impunity with which the [Israeli] regime has been allowed to carry out its crimes thus far, has emboldened it to continue and even increase its blatant defiance of the most basic and fundamental principles of international law and the United Nations Charter," the letter indicated.

Referring to a recent series of attempted attacks against Israeli officials, Khazaei's missive responded to Israeli accusations that Iran was behind the bombings, saying that Tehran “categorically rejects the allegations concerning any involvement of its officials or organizations in the recent purported terrorist operations against Israeli targets in a number of countries, namely Thailand, India, Georgia or Azerbaijan."

"These operations, as well as attributing the violent acts, are part of the general war game waged by this regime against Iran," the letter added.

Last week, Thai police said they were searching for two more suspects in a botched terror plot against Israeli diplomats that has been blamed on Iran.

Bangkok police commissioner Lt. Gen. Winai Thongson said one of the two new suspects may have been providing training in the use of explosives to three Iranian men who were detained in Thailand and Malaysia.

Following the attack on the wife of an Israeli diplomat in New Delhi this month, Prime Minister Benjamin Netanyahu said that Iran was behind the car bomb attack in India as well as a thwarted attack in Tbilisi, adding that Israel would continue to act against the international terror Iran produces.

Speaking following the attack in India and the thwarted attack in Georgia, Netanyahu blamed recent attempts on Israeli officials abroad on "Iran and its client Hezbollah," saying that standing behind Monday's attacks is "Iran, the world's greatest exporter of terror."

"In the last few months we have witnessed several attempts to target Israeli citizens and Jews in a series of countries, such as Azerbaijan and Thailand. In all of these cases we were able to thwart these attacks in cooperation with local forces," Netanyahu said.

The premier culminated by saying that "the Israeli government and its security services will continue, with local security, to act against the international terror which Iran produces."

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